For #1048 - Add ability to view tab history by long-pressing the back or forward button.

[person808]

Pull Request checklist

• Tests: This PR includes thorough tests or an explanation of why it does not
• Screenshots: This PR includes screenshots or GIFs of the changes made or an explanation of why it does not
• Accessibility: The code in this PR follows accessibility best practices or does not include any user facing features. In addition, it includes a screenshot of a successful accessibility scan to ensure no new defects are added to the product.

After merge

• Milestone: Make sure issues finished by this pull request are added to the milestone of the version currently in development.

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1. click on Show All Checks,
2. click Details next to "Taskcluster (pull_request)" after it appears and then finishes with a green checkmark,
3. click on the "Fenix - assemble" task, then click "Run Artifacts".
4. the APK links should be on the left side of the screen, named for each CPU architecture

[codecov-commenter]

Codecov Report

Merging #12519 into master will decrease coverage by 0.09%.
The diff coverage is 12.50%.

@@             Coverage Diff              @@
##             master   #12519      +/-   ##
============================================
- Coverage     26.75%   26.66%   -0.10%     
- Complexity      942      944       +2     
============================================
  Files           398      404       +6     
  Lines         15912    16008      +96     
  Branches       2042     2050       +8     
============================================
+ Hits           4258     4269      +11     
- Misses        11325    11412      +87     
+ Partials        329      327       -2     

Impacted Files	Coverage Δ	Complexity Δ
...pp/src/main/java/org/mozilla/fenix/HomeActivity.kt	6.45% <0.00%> (-0.45%)	13.00 <0.00> (ø)
...a/org/mozilla/fenix/browser/BaseBrowserFragment.kt	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
...lla/fenix/components/toolbar/DefaultToolbarMenu.kt	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
...g/mozilla/fenix/customtabs/CustomTabToolbarMenu.kt	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
...zilla/fenix/tabhistory/TabHistoryDialogFragment.kt	0.00% <0.00%> (ø)	0.00 <0.00> (?)
...ava/org/mozilla/fenix/tabhistory/TabHistoryView.kt	0.00% <0.00%> (ø)	0.00 <0.00> (?)
...g/mozilla/fenix/tabhistory/TabHistoryViewHolder.kt	0.00% <0.00%> (ø)	0.00 <0.00> (?)
.../org/mozilla/fenix/tabhistory/TabHistoryAdapter.kt	13.33% <13.33%> (ø)	0.00 <0.00> (?)
...nix/components/toolbar/BrowserToolbarController.kt	70.17% <100.00%> (+0.53%)	0.00 <0.00> (ø)
...rg/mozilla/fenix/components/toolbar/ToolbarMenu.kt	100.00% <100.00%> (ø)	0.00 <0.00> (ø)
... and 10 more

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